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Cu的添加对Fe-B-C-Cu系纳米晶合金软磁性能的影响 Cu Addition Effect on Soft Magnetic Properties in Fe-B-C-Cu Alloy System

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Author(s): 范星都 | 门贺 | 江静华 | 马爱斌 | 沈宝龙

Journal: Material Sciences
ISSN 2160-7613

Volume: 01;
Issue: 02;
Start page: 37;
Date: 2011;
Original page

Keywords: 软磁合金 | 铁基纳米晶合金 | 软磁性能 | 低铁损 | Soft Magnetic Alloy | Fe-Based Nanocrystalline Alloy | Soft Magnetic Property | Low Core Loss

ABSTRACT
通过单辊快淬法制备了Fe-B-C-Cu非晶态合金,并利用等温退火法对其进行晶化热处理制得纳米晶。用DSC、XRD、TEM、VSM、交直流B-H仪等对其微观结构及软磁性能进行了研究。结果表明:Cu的添加作为α-Fe形核点的作用明显,有效地促进了具有纳米级尺寸的单相α-Fe的析出,Fe84-xB10C6Cux系纳米晶合金的矫顽力随Cu含量的增加而先降低后增加,饱和磁感应强度则由于α-Fe的析出而呈增大的趋势。当Cu原子百分含量为1时,该系合金具有最佳的软磁性能,如高饱和磁感应强度Bs= 1.78 T,低矫顽力Hc= 5.1 A/m,低铁损P10/50= 0.34 W/kg。In this study, the microstructures and soft magnetic properties of Fe-B-C-Cu alloys prepared by annealing the melt-spun ribbons have been investigated by DSC, XRD, TEM, VSM, AC and DC B-H tracer measurement. The results show that inFe84-xB10C6Cuxalloy system, the addition of Cu element takes great effect on the precipitation of α-Fe, coercivity (Hc) decreases with increasing x and exhibits a minimum at x=1.0, then Hc increases. And magnetic flux density (Bs) shows an increasing tendency due to the precipitation of α-Fe. When x=1.0, the alloy exhibits excellent magnetic properties with a high Bs of 1.78 T, low Hc of 5.1 A/m and low core loss of 0.34 W/kg at 1.0 T and 50 Hz.
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